Read and complete the sentence with the correct part.

As soon as it was over, Dorian Gray rushed behind the scenes into the greenroom. When he entered, Sibyl Vane looked at him, and an expression of infinite joy came over her.
"How badly I acted tonight, Dorian!" she cried.
"Horribly!" he answered, gazing at her in amazement. "Horribly! It was dreadful. Are you ill? You have no idea what it was. You have no idea what I suffered."
"Dorian," she answered, you should have understood. But you understand now, don't you?" "Understand what?" he asked, angrily.
"Why I was so bad tonight. Why I shall always be bad. Why I shall never act well again."
He shrugged his shoulders. "You are ill, I suppose. When you are ill, you shouldn't act. You make yourself ridiculous. My friends were bored. I was bored."

Dorian Gray was angry with Sibyl Vane because ...

• she gave a bad performance on stage.
• she did not love him anymore.
• his friends were not impressed with her acting.
• she became ill.